Memory controller, memory system for dataset management handling, method, and storage medium thereof

A memory system, comprising:

• a non-volatile memory device;
• and
• a memory controller operatively coupled to the non-volatile memory device and configured to control the non-volatile memory device, the memory controller comprising:
• a data classification accelerator configured to divide a deallocated logical range into a set of deallocation zones, wherein the set of deallocation zones comprises one or more first deallocation zones which are classified into one or more aligned zones, respectively;
• a deallocation accelerator operatively coupled to the data classification accelerator, and configured to update a dataset management (DSM) bitmap based on the one or more aligned zones;
• and
• a mapping table accelerator operatively coupled to the data classification accelerator and the deallocation accelerator, and configured to:
• responsive to the updating of the DSM bitmap, generate a response indicating that the deallocated logical range is processed.

A method for operating a memory controller, comprising:

• dividing a deallocated logical range into a set of deallocation zones, wherein the set of deallocation zones comprises one or more first deallocation zones which are classified into one or more aligned zones, respectively;
• updating a dataset management (DSM) bitmap based on the one or more aligned zones;
• and
• responsive to the updating of the DSM bitmap, generating a response indicating that the deallocated logical range is processed.